将正则表达式从 JavaScript 转换为 PCRE 格式答案

【问题标题】：Convert regexp from JavaScript to PCRE format将正则表达式从 JavaScript 转换为 PCRE 格式
【发布时间】：2011-07-11 06:00:03
【问题描述】：

在这里看到很多关于同一主题的问题，但没有找到答案:(

我有这个{{Infobox[^]*?({{[^{}]*?}}[^]*?)*}} 正则表达式。在 Javascript 和此处 http://www.gskinner.com/RegExr/

中用作魅力

在 PHP 中，它会产生错误“编译失败：偏移 41 处的字符类缺少终止]”。

我知道分隔符，也尝试将 \ 放在 { 和 } 之前 - 没有帮助。

{{For|the title track of the album|Master of Puppets (song)}}
{{Infobox Album <!-- See Wikipedia:WikiProject_Albums -->
| Name        = Master of Puppets
| Type        = Studio album
| Artist      = [[Metallica]]
| Cover       = Metallica - Master of Puppets.jpg
| Released    = {{Start date|1986|3|3}}
| Recorded    = September 1 – December 27, 1985 at [[Sweet Silence Studios]], [[Copenhagen]], [[Denmark]]
| Genre       = [[Thrash metal]]
| Length      = 54:41
| Label       = [[Elektra Records|Elektra]], [[Music for Nations]], [[Vertigo Records|Vertigo]]
| Producer    = Metallica, [[Flemming Rasmussen]]
| Last album  = ''[[Ride the Lightning]]''<br/>(1984)
| This album  = '''''Master of Puppets'''''<br/>(1986)
| Next album  = ''[[...And Justice for All (album)|...And Justice for All]]''<br/>(1988)
| Misc        = {{Singles
  | Name           = Master of Puppets
  | Type           = Studio
  | single 1       = [[Master of Puppets (song)|Master of Puppets]]
  | single 1 date  = July 2, 1986
  | single 2       = [[Battery (song)|Battery]]
  | single 2 date  = 1986
  | single 3       = [[Welcome Home (Sanitarium)]]
  | single 3 date  = 1986
  }}
}}
'''''Master of Puppets''''' is the third studio album by the American [[heavy metal music|heavy metal]] band [[Metallica]]. It was released on March 3, 1986 through [[Elektra Records]]. The album reached #29<ref>{{Cite news 
  | last = Pareles
  | first = Jon
  | coauthors = 
  | title = HEAVY METAL, WEIGHTY WORDS
  | work = [[The New York Times]]
  | place = USA
  | page = 8
  | language = 
  | publisher = The New York Times Company
  | date = 10 July 1988
  | url = http://www.nytimes.com/1988/07/10/magazine/heavy-metal-weighty-words.html?pagewanted=8
  | accessdate = 14 November 2010}}</ref> on the U.S. [[Billboard 200|''Billboard'' 200]] album chart and was the band's first gold record for sales of over 500,000 copies. This was done without any radio airplay or the release of a music video. The album eventually was certified 6x platinum by the [[Recording Industry Association of America|RIAA]].<ref>{{cite web|title=Gold & Platinum|url=http://riaa.com/goldandplatinumdata.php?resultpage=1&table=SEARCH_RESULTS&action=&title=Master%20of%20Puppets&artist=Metallica&format=&debutLP=&category=&sex=&releaseDate=&requestNo=&type=&level=&label=&company=&certificationDate=&awardDescription=&catalogNo=&aSex=&rec_id=&charField=&gold=&platinum=&multiPlat=&level2=&certDate=&album=&id=&after=&before=&startMonth=1&endMonth=1&startYear=1958&endYear=2008&sort=Artist&perPage=25|publisher=RIAA|accessdate=2009-12-31}}</ref>

【问题讨论】：

你能显示你试图匹配的字符串吗？
偏移量 41？你的RE甚至没有那么长。有什么遗漏吗？
试图解析维基百科的文章。将示例添加到初始帖子中。缺少单词“album”，但这并不重要——“Compilation failed: missing terminating ] for character class at offset 35”
您是否尝试使用正则表达式解析 html？

标签： php regex pcre

【解决方案1】：

我认为[^] 的用法具有误导性/不清楚，我不确定它的含义。

（因为您收到关于缺少 ] 的错误，我假设它会打开一个字符类，^ 是该类的否定，以下 ] 不会关闭该类，它是它的第一个成员。但是由于 Regexr 使用它的方式不同，我认为不同的正则表达式引擎中的含义不同。）

你可以试试这个

{{Infobox[^{]*?({{[^}]*?}}[\s\S]*?)*}}

看here on Regexr

【讨论】：

【解决方案2】：

我想说问题在于 ^、{ 和 } 字符没有被转义 - 你应该尝试一下：

\{\{Infobox[\^]*?(\{\{[\^\{\}]*?\}\}\[^]*?)*\}\}

编辑以匹配任何带有[^]的字符：

\{\{Infobox.*?(\{\{[.\{\}]*?\}\}\.*?)*\}\}

【讨论】：

如果我转义 ^ 正则表达式与 PHP 中的任何内容都不匹配，gskinner.com/RegExr 至于 {} - 我试图转义它们 - 没有帮助。
我认为 OP 不希望插入符号逃脱。表达式[^] 是一种写“任何字符”的方法，这是正在尝试的：直到下一个{{ 之前的任何字符确实需要转义。
任何字符应该匹配. - ^ inside [] 表示NOT the following character 之后他没有任何字符